Beep,beep,beep on Merc

[Tyme2fish]

I'm posting this question for a friend on another site. Any idea?

[h=2]Alarm beeping on mercury efi 150 outboard.[/h]

fished a long night running all accessories. Battery was low enough I had to jump across from a trolling motor battery. shortly after starting I started getting a beeping alarm from my warning system. It is a beep ,beep , beep warning. Only ran it back to ramp and loaded up. I have not ran boat since getting home and charging batteries. It was pumping water and full of oil. Could this be a low voltage from battery warning ? Or will that cause a beep, beep, beep? I have never had this happen or ran across it before. It is a 2002 mercury efi 150. It doesn't have any lights on the dash that can show causes. Thanks for any help ideas.​

 

[Robot1947]

Re: Beep,beep,beep on Merc

The intermittent horn is usually a signal of a problem in the oil injection system.

Charge the battery and run the engine on premix fuel and oil to safely check out the problem.

 

[Tyme2fish]

Re: Beep,beep,beep on Merc

I appreciate the reply. I'll let him know what you said. Thanks, again.

 

[CharlieB]

Re: Beep,beep,beep on Merc

The oil alarm module checks oil level in the motor mounted tank, loosen the oil tank cap slightly, run the motor until the tank fills from the main tank so full that it begins to overflow, tighten the cap. The module also compares the signal from the oil pump rotation sensor to an ignition pulse from one cyl, often #4, when any difference it alarms.

Find the green wire on the module and follow it back to see for sure which cyl coil it connects to, spark test that cyl to ensure it is not an ignition problem.

Definitely add oil to the fuel just in case it is an oiling problem. The excess oil will only cause it to smoke a bit more than normal, rather that than risk hurting the motor.